ME: rework markdown parser display to be more generic

[LHBruneton-C2C]

Description

This PR makes the markdown parser display more generic, and fixes the height in the rich text form field of the metadata editor.

Screenshots

Quality Assurance Checklist

• Commit history is devoid of any merge commits and readable to facilitate reviews
• If new logic ⚙️ is introduced: unit tests were added
• If new user stories 🤏 are introduced: E2E tests were added
• If new UI components 🕹️ are introduced: corresponding stories in Storybook were created
• If breaking changes 🪚 are introduced: add the breaking change label
• If bugs 🐞 are fixed: add the backport <release branch> label
• The documentation website 📚 has received the love it deserves

[github-actions]

Affected libs: ui-elements, feature-notifications, feature-catalog, feature-record, feature-router, feature-editor, feature-search, feature-map, feature-dataviz, ui-catalog, ui-search, ui-layout,
Affected apps: datahub, metadata-editor, demo, webcomponents, map-viewer, search, datafeeder,

• 🚀 Build and deploy storybook and demo on GitHub Pages
• 📦 Build and push affected docker images

[github-actions]

📷 Screenshots are here!

[coveralls]

coverage: 83.773% (+0.8%) from 82.94%
when pulling b836a6f on ME/fix-rich-text-preview-overflow
into e079151 on main.

[jahow]

Looking good, thanks :)